The option 31 in the RA specifies the DNS search list, the support
to configure this via UCI is missing in case dnsmasq-dhcpv6 is used.
This commit uses the uci option domain (same as is done by odhcpd) to
read and pass the DNS search list to dnsmasq, which is then used by RA.
Hence, with this commit, we are able to configure DNS search list for the
RA messages via the uci config when dnsmsaq-dhcpv6 is used.
Signed-off-by: Rahul Thakur <rahul.thakur@iopsys.eu>
Most relevant feature for openwrt in this release, supports dynamically
removing hosts from 'hostsdir' supplied host files.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This backports a commit from upstream dnsmasq to fix CVE-2022-0934.
CVE-2022-0934 description:
A single-byte, non-arbitrary write/use-after-free flaw was found in
dnsmasq. This flaw allows an attacker who sends a crafted packet
processed by dnsmasq, potentially causing a denial of service.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Fix the return value, shell return codes should be 0 to indicate success
(i.e. mount point found), 1 should be failure (i.e. mount point not-found).
Fixes: ac4e8aa ("dnsmasq: fix more dnsmasq jail issues")
Signed-off-by: Oldřich Jedlička <oldium.pro@gmail.com>
Co-authored-by: Oldřich Jedlička <oldium.pro@gmail.com>
* dnsmasq: add ubus acl to allow calls to hotplug.tftp object
dnsmasq may call hotplug.dhcp, hotplug.neigh and hotplug.tftp.
Only the first two callees were listed in the ACL, so add missing
hotplug.tftp.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* dnsmasq: fix the dynamic dns object names patch
We can't use booleans, since we're not including stdbool.h. Use integers
instead.
Fixes: 0b79e7c01e ("dnsmasq: generate the dns object name dynamically")
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Co-authored-by: Daniel Golle <daniel@makrotopia.org>
Co-authored-by: Rui Salvaterra <rsalvaterra@gmail.com>
* dnsmasq: add support for monitoring and modifying dns lookup results via ubus
The monitoring functionality will be used for dns rule support in qosify
Signed-off-by: Felix Fietkau <nbd@nbd.name>
* dnsmasq: add match_tag for --dhcp-host
A set of tags can be specified for --dhcp-host option to restrict the
assignment to the requests which match all the tags.
Example usage:
config vendorclass
option networkid 'udhcp'
option vendorclass 'udhcp'
config host
option mac '*:*:*:*:*:*'
list match_tag 'switch.10'
list match_tag 'udhcp'
option ip '192.168.25.10'
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Co-authored-by: Felix Fietkau <nbd@nbd.name>
Co-authored-by: Paul Fertser <fercerpav@gmail.com>
Commit a2fcd3900c ("dnsmasq: improve init script") broke the existing
handling for hosts_dir. Remove the redundant mount again to fix it.
Reported-by: Hartmut Birr <e9hack@gmail.com>
Fixes: a2fcd3900c ("dnsmasq: improve init script")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Co-authored-by: Daniel Golle <daniel@makrotopia.org>
* fix restart in LuCI (inherited umask was to restrictive)
* make directory of hosts-file (!= /tmp) accessible in ujail
Reported-by: Hannu Nyman <hannu.nyman@iki.fi>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Co-authored-by: Daniel Golle <daniel@makrotopia.org>
Bring the usage in line with the dnsmasq man page and the other options
where set: is mandatory.
No functional change.
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Co-authored-by: Paul Fertser <fercerpav@gmail.com>
* dnsmasq: fix more dnsmasq jail issues
* remove superflus mounts of /dev/null and /dev/urandom
* reset EXTRA_MOUNTS at the beginning of the script
* add mount according to ignore_hosts_dir
* don't add mount for file which is inside a directory already in the
EXTRA_MOUNTS list
Fixes: 59c63224e1 ("dnsmasq: rework jail mounts")
Reported-by: Hartmut Birr <e9hack@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* dnsmasq: reset EXTRA_MOUNT in the right place
EXTRA_MOUNT variable should be reset in dnsmasq_start() rather than
just once at the beginning of the script.
Fixes: ac4e8aa2f8 ("dnsmasq: fix more dnsmasq jail issues")
Reported-by: Hartmut Birr <e9hack@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Co-authored-by: Daniel Golle <daniel@makrotopia.org>
* split into multiple lines to improve readability
* use EXTRA_MOUNT for addnhosts instead of blindly adding /tmp/hosts
* remove no longer needed mount for /sbin/hotplug-call
* add dhcp-script.sh dependencies (jshn, ubus)
Fixes: 3a94c2ca5c ("dnsmasq: add /tmp/hosts/ to jail_mount")
Fixes: aed95c4cb8 ("dnsmasq: switch to ubus-based hotplug call")
Reported-by: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Co-authored-by: Daniel Golle <daniel@makrotopia.org>
Programs like the olsr-name-plugin write hostname files to "/tmp/hosts/".
If you don't add this to the jail_mount, dnsmasq can't read it anymore.
Signed-off-by: Nick Hainke <vincent@systemli.org>
Co-authored-by: Nick Hainke <vincent@systemli.org>
'--local' is a synonym for '--server' so let's use '--local' in the
resultant config file for uci's 'local' instead of uci's local
parameter being turned into '--server'. Slightly less confusion all
round.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Currently, when using multiple dnsmasq instances they are all assigned
to the same Ubus instance name. This does not work, as only a single
instance can register with Ubus at a time. In the log, this leads to
`Cannot add object to UBus: Invalid argument` error messages.
Furthermore, upstream 3c93e8eb41952a9c91699386132d6fe83050e9be changes
behaviour so that instead of the log, dnsmasq exits at start instead.
With this patch, all dnsmasq instances are assigned unique names so that
they can register with Ubus concurrently. One of the enabled instances
is always assigned the previous default name "dnsmasq" to avoid breaking
backwards compatibility with other software relying on that default.
Previously, a random instance got assigned that name (while the others
produced error logs). Now, the first unnamed dnsmasq config section is
assigned the default name. If there are no unnamed dnsmasq sections the
first encountered named dnsmasq config section is assigned instead.
A similar issue exists for Dbus and was similarly addressed.
Signed-off-by: Etan Kissling <etan.kissling@gmail.com>
[tweaked commit message] dnsmasq was not crashing it is exiting
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Co-authored-by: Etan Kissling <etan.kissling@gmail.com>
Fixes issue with merged DNS requests in 2.83/2.84 not being
retried on the firsts failed request causing lookup failures.
Also fixes the following security problem in dnsmasq:
* CVE-2021-3448:
If specifiying the source address or interface to be used
when contacting upstream name servers such as:
server=8.8.8.8@1.2.3.4, server=8.8.8.8@1.2.3.4#66 and
server=8.8.8.8@eth0 then all would use the same socket
bound to the explicitly configured port. Now only
server=8.8.8.8@1.2.3.4#66 will use the explicitly
configured port and the others random source ports.
Remove upstreamed patches and update remaining patch.
Signed-off-by: Alan Swanson <reiver@improbability.net>
[refreshed old runtime support patch]
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Co-authored-by: Alan Swanson <reiver@improbability.net>
默认情况下 SSR PLUS DNS结果根本无法缓存(由于引入拒绝ipv6结果导致的问题)，nslookup & dig 延迟每次依然有200-300多.
dnsmasq处设置缓存依然无效，设置TTL也无效，应该是bug。
解决办法是手动指定缓存TTL为最大一小时。域名查询实测有效缓存0延迟。
此变更仅使开启dnsmasq缓存的情况下正常工作。
This fixes the following security problems in dnsmasq:
* CVE-2020-25681:
Dnsmasq versions before 2.83 is susceptible to a heap-based buffer
overflow in sort_rrset() when DNSSEC is used. This can allow a remote
attacker to write arbitrary data into target device's memory that can
lead to memory corruption and other unexpected behaviors on the target
device.
* CVE-2020-25682:
Dnsmasq versions before 2.83 is susceptible to buffer overflow in
extract_name() function due to missing length check, when DNSSEC is
enabled. This can allow a remote attacker to cause memory corruption
on the target device.
* CVE-2020-25683:
Dnsmasq version before 2.83 is susceptible to a heap-based buffer
overflow when DNSSEC is enabled. A remote attacker, who can create
valid DNS replies, could use this flaw to cause an overflow in a heap-
allocated memory. This flaw is caused by the lack of length checks in
rtc1035.c:extract_name(), which could be abused to make the code
execute memcpy() with a negative size in get_rdata() and cause a crash
in Dnsmasq, resulting in a Denial of Service.
* CVE-2020-25684:
A lack of proper address/port check implemented in Dnsmasq version <
2.83 reply_query function makes forging replies easier to an off-path
attacker.
* CVE-2020-25685:
A lack of query resource name (RRNAME) checks implemented in Dnsmasq's
versions before 2.83 reply_query function allows remote attackers to
spoof DNS traffic that can lead to DNS cache poisoning.
* CVE-2020-25686:
Multiple DNS query requests for the same resource name (RRNAME) by
Dnsmasq versions before 2.83 allows for remote attackers to spoof DNS
traffic, using a birthday attack (RFC 5452), that can lead to DNS
cache poisoning.
* CVE-2020-25687:
Dnsmasq versions before 2.83 is vulnerable to a heap-based buffer
overflow with large memcpy in sort_rrset() when DNSSEC is enabled. A
remote attacker, who can create valid DNS replies, could use this flaw
to cause an overflow in a heap-allocated memory. This flaw is caused
by the lack of length checks in rtc1035.c:extract_name(), which could
be abused to make the code execute memcpy() with a negative size in
sort_rrset() and cause a crash in dnsmasq, resulting in a Denial of
Service.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Co-authored-by: Hauke Mehrtens <hauke@hauke-m.de>
kernel: bump to 4.14.193, 4.19.138, 5.4.59 (#5350)
431fb8c mac80211: add AQL improvements
6bdd4c9 mac80211: add missing backports for building with 4.14 kernels
0106820 mac80211: add missing return code checks in AQL improvements
e7f7101 mac80211: rework encapsulation offload support
[package]
base-files: add function for generating random MAC
dnsmasq: abort dhcp_check on interface state
boot: sync upstream source code
ath10k-ct-firmware/mt76/sch_cake: update to latest git HEAD
[script]
download: add China Mirror Station
[target]
Sync: arc770, ath79, bcm63xx, kirkwood, lantiq, layerscape,
mediatek, mvebu, octeon, oxnas, pistachio, uml
Sync most of the target patches.
Run-compiled-on: ipq40xx (4.19 & 5.4), ramips
